On Thu, 18 Dec 2008 13:59:06 -0600
"Rahul Nabar" <rpnabar at gmail.com> wrote:
> For a while I've been seeing errors of this sort in my /var/log/messages
>> kernel: nfsd: too many open TCP sockets, consider increasing the number of
> nfsd threads
>> I googled a bunch and think the solution might be to boost RPCNFSDCOUNT in
> the line "[ -z "$RPCNFSDCOUNT" ] && RPCNFSDCOUNT=8" in the file
> /etc/init.d/nfs.
>> Question: This seems a suspicious place to change it. Isn't there a nfs
> config file somewhere else?
>> Question2: How high can I boost the number of NFS threads? Or how I should
> I? Is there any metric I can track to decide an optimum number? Most
> recomendations were for 32, 64 or 128. What do people suggest? Any
> downsides to having numbers that are too high?
>> In case it matters, this is our master-node Linux server and has the
> /home directories for each user
> exported to about 200 odd compute-nodes.
On EL, there's /etc/sysconfig/nfs, and /etc/defaults/nfs-kernel-server
on Debian-based systems.
Up it to 32, see if you keep getting the message? :)
Also check that you're actually running just 8:
ps auxf|grep nfs
Regards,
--
Alex Chekholko chekh at pcbi.upenn.edu